Error code occurred during ECU upgrade (7000-27-7000)

Cause

No response or delayed response from the controller (ECU) to the diagnostic tool's (diagnostic app) encryption command

Actions

Check if the diagnostic tool (diagnostic app) is updated to the latest version

Check for any aftermarket equipment installed and remove it before retrying the upgrade

Since the vehicle's controller (ECU) may be faulty, it is recommended to retry at least 3 times

Contact

Please contact Technical Support Center for assistance.
Global Support Contact Guide

When contacting, be sure to provide the representative with the Vehicle Identification Number (VIN).